345173429 has 2 divisors, whose sum is σ = 345173430. Its totient is φ = 345173428.

The previous prime is 345173401. The next prime is 345173431. The reversal of 345173429 is 924371543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309830404 + 35343025 = 17602^2 + 5945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345173429 is a prime.

Together with 345173431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 345173392 and 345173401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345178429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172586714 + 172586715.

It is an arithmetic number, because the mean of its divisors is an integer number (172586715).

Almost surely, 2^345173429 is an apocalyptic number.

It is an amenable number.

345173429 is a deficient number, since it is larger than the sum of its proper divisors (1).

345173429 is an equidigital number, since it uses as much as digits as its factorization.

345173429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 345173429 is about 18578.8435861870. The cubic root of 345173429 is about 701.4754111756.

The spelling of 345173429 in words is "three hundred forty-five million, one hundred seventy-three thousand, four hundred twenty-nine".